TY - JOUR AU - S. V. Gurov TI - Duality and isomorphism of spaces of solutions of elliptic equations JO - Zapiski Nauchnykh Seminarov POMI PY - 1971 SP - 28 EP - 35 VL - 22 UR - http://geodesic.mathdoc.fr/item/ZNSL_1971_22_a2/ LA - ru ID - ZNSL_1971_22_a2 ER -